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Brian is trying to pull Julie on a sled across a flat snowy field. Brian pulls on a rope attached to the sed. His pulling force is directed forward and upwards at a 30 degree angle above horizontal. Julie's mass is 50kg and the sleds mass is 8kg. If the coefficient of static friction among the sled runners and snow is 0.10, how much force should Brian exert on the rope to start moving the sled?
A pilot wishes to fly from San Francisco to Sacramento 138 kilometer northeast. The wind is blowing from north at 24 km/h, Determine what heading must the pilot take
You accidentally throw your car keys horizontally at 8.0 m/s from a cliff 64 m high. How far from the base of the cliff must you look for the keys?
A rabbit runs in a garden such that the x- and y- components of its displacement as function of times are given by x(t) = -0.45 t2 - 6.5 t + 23.3 and y(t) = 0.35 t2 + 8.3 t + 49.9
As a dilligent physics student, you carry out physics experiments at every opportunity. At this opportunity, you carry a 1.35-m-long rod as you jog at 3.05 m/s, holding the rod perpendicular to your direction of motion. What is the strength of the..
A C=35 pF parallel plate cApacitor has plates of area A=402cm^2. What is the electric field between its plates when it is connected across a potential difference of V=14.5 Volts
a simple pendulum is made from a 0.617 m-long string and a small ball attached to its free end. the ball is pulled to
A galvanometer has a coil with a resistance of 75 ?. A current of 156 mA causes full scale deflection. Calculate the value of the series resistor that is required in order to use the galvanometer as a Voltmeter with 40 V full scale
A typical home may require a total of 2.00*10^3kWh of energy per month. Suppose you would like to obtain this energy from sunlight, which has an average daylight intensity of 1200W/m^2.
A 0.400-kg bead slides on a frictionless, curved wire, starting from rest at pt A, Find the speed of the second bead just after the collision
A sled of mass 50.0 kilogram is pulled along flat, snow-covered ground. Find what force will be needed to start the sled moving
A very light rigid rod with a length of 0.523 m extends straight out from one end of a meter stick. Determine the period of oscillation of the system
a boy of mass 46.2 kg is initially on a skateboard of mass 2.00 kg moving at a speed of 10.2 ms. the boy falls off the
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